Improvement in shutter-workers



1. w.1EnK|Ns. A, l -Sh'utter-Wurk-ers.. No.152,641. Patentedlune'smwm.

A' UNITED i STATEs PATENT OFFICE.

JAMES W. JEDKINS, OF MONMOUTH, MAINE.

IMPROVEMENT IN SHUTTER-WORKERS.

Specification forming part of Letters Patent No. 152,64 A1, dated June 30, 1874; application filed May 12, 1874.

To all whom it may concern:

Be it known that I, JAMES IV. J nDKlNs, of Monmouth, in the county of Kennebec and State of Maine, have invented an Improved Shutter-Operator, of which the following is a specification My invention relates to certain improvements in devices for opening and closing window-shutters from the inside, which devices may be applied to shutters of any ordinary4 description, independent ot' the hinges by which the shutters are attached to the window-frame.

This invention consists mainly ot' a shaft carrying a pinion, which operates upon a chambered plate having teeth and ribs ot' a peculiar construction, as hereinafter described, for operating window blinds or shutters. The invention consists further of a peculiar construction and combination of parts hereinafter described and claimed.

In the accompanying drawing, Figure l is a side elevation, showing my invention applied to a shutter. Fig. 2 is a transverse horizontal section. Figs. 3, 4, and 5 are detail views hereinafter referred to.

rlhe shutter A is attached to the frame B by hinges c of any suitable construction. At the desired point between the hinges a hole is bored through the frame, through which passes a shaft, D, having' a knob or crankhandle, d, on its inner end, and a crown -pinion, c, on its outer end. Between the inner side of the pinion and the outer face of the frame B is a recess, in which is inserted a shallow circular box, F, in the center A.of which is journaled a circular plate, G, on the inner side of which are teeth g, (see Figs. 3 and 4,) for engagement with the pinion c, and on the outer side are spirally-eurved ribs h, (see Fig. 5,) for engagement with a mutilated gearwheel, J, which is journaled in a casing, I, screwed to the frame B outside of the box F and plate G. The pinion e and plate G are arranged to revolve in vertical planes, and

the gear J in a horizontal plane, or at right angles with said plate and pinion. The gearwheel J is formed with a quadrantal opening',

in4 which the corner of the side rail of the4 shutter A has room to play, as shown in Fig. 2. At one corner of the quadrantal opening is a pin or stud, l, projecting on each side and engaging with slots m in a plate, M, which is screwed to the outside ot' the shutter, as shown in Figs. l and 2. The outer side of the plate G is concave outside of its center, corresponding with the circumference of the gear J, so as to insure constant contact of the ribs It with the wheel J.

Vhen the handle d is turned the pinion e revolves the plate G, and its curved ribs hengage with the gear-wheel J, so as to turn it, and by means of the pin l and slotted plate M to open or close the shutter according as the Vhandle is turned to the right or left. By means of the slots m the plate M may be adjusted on the shutter to engage with the pin t, so that the invention may be readily applied to shutters already mounted, independently ot'- the hinges.

That I claim as new, and desire to secure by Letters Patent, is-

l. The combinationof the Vshaft I), pinion c, and ehambered plate G having teeth g :and curved ribs h, substantially as and for the purpose described.

2. The chambered plate G provided with teeth g and having its Outer surface concave, and furnished with the curved ribs h, in combination with the mutilated gear-wheel J, as shown and described, for the purpose specied.

3. The plate M, formed with the slots m, in combination with the gear-wheel J, provided with the pin or stud l, substantially as shown and described.

JAMES W. JEDKINS. Witnesses: t

WM. G. BROWN, WM. H. Il. BROWN. 

